Brake-applying mechanism



April 30, 1929m 1111.111111 "1,111,119

A BRAKE APPLYING MECHANISM KENNETH E1LY'MAN April 30, 1929, E YMAN BRAKE APPLYING MEGHANISM.-

5 sheets-sheet 3 Filed Jung 7, 1927 KENNETH E.ILYMAN Patented Apr. `3l), 1.929.

UNITED] s'rfAjTEsT .1,711,119 PAT-ENT orificia.v

Y KENNETH E. LYMAN, OF CHICAGO, ILLINOIS, ASSIGNOR T BENDIX BRAKE COMPANY, i i I OF CHICAGO, ILLINOIS, A CORPORATION OIFV ILLINOIS. Y

l BRAKE-APPLYING MECHANISM.

Application led June 7 ,V

'lustrated as embodied in novel operating mechanism for a front wheel' automobile brake. An object of the invention 1s to pro-f vide a strong but 4inexpensive support for the chassis end of the brake-operating shaft, preferably of a type capable of. being made principally of steel stanipings or 'pressings The drawings illustrate'varioiis forms of supports, each including Aa` channel-section member secured to the chassis frame, and pivoted in a novel manner at one end to one end of a second channel-section member universale ly supporting the shaft at its other end. Preferably there isa spring between the two mein-- bers urging them apart.

Another feature relates to supporting the shaft end(v by a novel ball-and-socket Joint which does not require any lubrication, in that the metal socket incloses a shaft-support ing ball of phenolic" condensation material such as bakelite The above and other objects. and features of the invention will be apparent from the f ollowing description of the various illustrative embodiments shown in the accompanying drawing, in which:

Figure 1 is a vertical section through one front brake and associated parts, showing the S0 brake-applying shaft in rear elevation;

Figure 2 is a partial section on the line 2-2 of Figure l, showing the novel support in top 1 plan; v

Figure 3 is asection on the line 3 3- of .75 Figure 1, showing thesupport in elevation;

Figure 4 is a partial section through the pivoted end of the support, on the line 4-4 of Figure 3;

Figures 5 and 6 are respectively views c or-V respondingr to Figures 2 and 3,- and showing a modified form of support in top plan and 1n elevation;

Figure 7 is a section through the modified support, on the line'7-7 of Figure 5 `Figures 8, 9, and 10 are figures corresponding respectively with Figures 5, 6, and, but showing a different modi-fied support; and Figures 11 and 12 are' figures corresponding respectively to Figures 5 and 6, but showingl still another form of support.

The brake illustrated in Figure 1 includes a drum 10 rotatably mounted, with a wheel (not shown) on the spindle' 12 of a knuckle 14 which is swiveled,'by a king-pin 16 or the llike` at one end of an axle 18.` Axle 18 sup'- This invention relates to brakes, and is il i927. serial No. 197,17?.

ports, through the usual springs 20, the chassisframe 22.

A backing plate 24' may be secured to thev knuckle 14 at the open side ofdruiri 10. The* friction means of the brake is shown as comprising shoes 26 operated by a cani 28 or the like. The cani, in turn, isoperated by a shaft 30, through auniversal joint 32 arranged above the king-pin 16. Shaft is provided with a. suitable arniorlever 34 for connection to the usual connections from the brake pedal.

According to the present invention, the chassis end of shaft 30 is universally supported, in a manner permittingV the shaft a. short movement lengthwise, by a novel sup# port consisting principally of two pressed metal parts or steel stainpings.

One stamping, shown at 36, is of channel section, the bottom being secured to frame 22 by bolts 38, and the side flanges being directed away from the frame. The other stamping shown at 40, is also of channel section,.but with its side flanges direct-ed toward the frame 22. l

At its left end in Figure 2, stamping 40 is formed with a semispherical socket, cooperating with a separate part 42 suitably secured thereto, to receive a ball 44 pressed on the end f .of shaft 30. While a ball of bronze, especially graphite bronze, will be'quite satisfactory for this purpose, in order to avoid entirely the necessity for lubrication I prefer to inakethc ball 14 of phenolic condensation material such as bakelite, this material having a Very hard and glossy outer surface which h as very low wear and friction factors when in engagement with steel or'other metal.

i At the right end of the support in Figure 2, the sidevllanges of member 36 lit between the side flanges of the member 40,/ the flanges being pivotallyI .connectedby a vertical pin 46. In order to relieve the pin 46 of the brakef applying force of lever 34, the two ineiners 36 and 40 are for-med at these ends with 100' interengaging vertically-arranged cylindrical surfaces, thus member 40 transmits its en'd thrust directly to member 36, and not through ln 46. i p Preferably a spring 48, confined between members 36 and 4D, urges these members apart, and holds all of the parts of the brake control under spring tension. 4

In the arrangement of Figures 5-7, meinber or stamping 50, corresponding to ineinsleeved on the pin between port-ions 54.'

ber 36, is offset atits end away from frame 22,- so that the other member 52 (corresponding` to member 40) may extend substantially parallel to the frame. Member 52 in this case has atiits end two cylindrical bearing portions 54 sleeved on the pin 46', and if desirec the member 50 may have a similar portion 5G 'lVhile several illustrative embOlmGIltS 'have been described in detail, it is not my intention -to limit the'scope of the invention to those particular embodiments, or otherwise than by the terms of the appended claims.

I claim:

l. A support for the chassis end of a brakeapplying shaft, comprising, in combination, a

channel-section pressed-metalY member liav- 'ing its bottom. arranged to engage and be secured to a chassis frame member and having its side flanges directed away from the chasthe ballv 62, corresis frame member, a second channel-section pressed-metal member universally supporting the shaft end at one of its ends and having its other end nested with the end of the first channel-section' member, the side flanges of' l the two members at said end fitting one within the other, and a pivot passing,` through the side flanges of both members at said end and pivotally connecting,r them.

2. A support for the chassis end of a brakeapplying` shaft, comprising, in combination, a channel-section pressed-metal member having its bottoni arranged to engage and be secured to a chassis frame member and having its side flanges directed away from the chassis frame 1 member, a second el'iannel-seetion pressed;

`metal member universally supportingI the shaftend at one of its ends and having its other end nested with the end of the first channel-section member, the sidey flanges of the ltwo members at said end fitting one within the other,a pivot passing'through the side langes'of both members at said end and pivotally connecting them, and "a spring arranged between said members and urging. 4them apart.

In ytestimony whereof, I have hereunto signed my name.

KENNETH E. LYMAN. 

